In a world where live streaming has emerged as a profession for many, HDMI, SDI, and NDI, have become the most popular video signal standards. Each one of them shares some differences and similarities. If you are new to live streaming and want to know more or explore deeper about HDMI vs. SDI or NDI vs. HDMI, you are at the right place. You will be familiar with all three video signal standards along with the OBSBOT Tail Air NDI streaming camera for a better live streaming experience.
HDMI is everywhere! It has become a key digital component in our modern lifestyle for connecting multiple devices simultaneously. Let’s get to know the detailed overview of HDMI now.
HDMI or high-definition multimedia interface utilizes ANSI/CTA-861-H and is widely used for the transfer of high-definition audio and video from a source like a computer and TV box to a TV monitor, computer, or projector.
There are three common connector types:
After HDMI, SDI is another popular protocol for digital video transmission. It was standardized by the Society of Motion Picture and Television Engineers in 1989.
SDI refers to the Serial Digital Interface that helps in the transmission of high-quality uncompressed video signals using coaxial or fiber optic cabling. It is highly used in the professional video production industry.
Every SDI cable is equipped with a connector to lock the device when connected to another. The following are the commonly used SDI standards:
SDI cables are available in different versions and the version selected by you will determine the maximum resolution and frame rate of the output.
NDI, the network device interface can be used to establish the connection between two or multiple video devices over an ethernet network in real time. Developed by NewTek, this video-over-IP protocol supports low latency, high-quality video, and audio streaming.
Explore more details about the NDI Streaming Solution.
Until now, we have been trying to make you aware of the different video transmission standards and understand SDI vs. HDMI quality or NDI. But now, it's time to know about the ideal equipment to improve the live streaming experience.
OBSBOT Tail Air enables a smooth remote live-streaming experience and emerged as a popular tool for content creators as well. It is packed with AI technology and a multi-cam setup to take your live-streaming experience to the next level.
To figure out the best live streaming standard, we recommend NDI if you are streaming over the internet in real-time. Although it’s convenient integrating with your existing network infrastructure gonna be a bit complex. On the other hand, HDMI and SDI are also great options but considering from the professional point of view, SDI works better and HDMI should be good for home setup.
For high-quality and professional video production, there’s no standard better than SDI. However, if you don't want to use cables, NDI can be a better option as it uses the existing network infrastructure.
We've put together a list of frequently asked questions to help you decide which video interface is best for you.
In terms of professional video production, SDI is best recommended because it’s compatible with 8K resolution while the maximum compatibility of HDMI is 4K.
A big yes! It can transmit 4K videos easily if you use the right standard. For instance, 6G and 12G SDI are most suitable for 4k video.
Both have their pros and cons. It’s obvious SDI is more powerful in terms of live streaming, NDI eases network-based live streaming such as video conferencing or remote video production.
If you were unaware of the differences between SDI Vs NDI or HDMI Vs. SDI video signals, here we have shared everything to keep your doubts clear. No matter which technology you use among them, the end decision will depend on your needs only.